Tank LC Skeleton Sapphire watch, 30 mm x 39.2 mm, Manufacture mechanical movement with manual winding, caliber 9616 MC. Case in 18K white gold, beaded crown in 18K white gold set with a blue sapphire cabochon, sword-shaped hands in blued steel. Strap in black alligator skin, double adjustable folding buckle in 18K white gold. Complication with skeleton hours, minutes and small seconds. Individually numbered movement containing 159 parts including 21 jewels. Total dimensions of the movement: 26 mm, x 26.3 mm, thickness: 3.6 mm, balance: 28,800 vibrations/hour, power reserve approx. 3 days. Sapphire crystal and case back. Case thickness: 7.45 mm. Water-resistant to 3 bar (30 meters).
Worn by Louis Cartier himself, the “Tank Louis Cartier” watch sets the standard for all Tank watches. To embody Louis Cartier's contribution to “modern style”, later known as Art Deco, the tops of the lugs were rounded in contrast to the previously fashionable rectangular form and proud lines.